I'm not sure if this is a slot card or not. I received this from my mother who used to live in Germany back in 1957. She said she got this plastic card from a casino from either in France or Monaco. If anyone could identify it I would be most greatful. The card is dark red - GRAND CASINO - SORTIE - Societe Romande de Spectacles. On the back of the card appears to be an advertisement of some kind. Take a look and let me know what this is. Thanks.